Air conditioner



FIG. 1 is a perspective view of an air conditioner, showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is an enlarged view of the encircled portion 8 in FIG. 1.

The broken lines illustrating portions of an air conditioner form no part of the claimed design.

The dot-dot-dash broken lines encircling a portion of the claimed design form no part of the claimed design. 

CLAIM The ornamental design for an air conditioner, as shown and described. 